Number | Date | Country | Kind |
---|---|---|---|
2854154 | Dec 1978 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3671577 | Ono | Jun 1972 | |
3755423 | Onoda | Aug 1973 |
Number | Date | Country |
---|---|---|
2454768 | May 1976 | DEX |
1138366 | Jan 1969 | GBX |
1277837 | Jun 1972 | GBX |
1487274 | Sep 1977 | GBX |
1494430 | Dec 1977 | GBX |
Entry |
---|
Kulifay, J. Am. Chem. Soc., 83, pp. 4916-4919 (1961). |
"Pure and Applied Chemistry", 43, p. 543 (1975). |